{"id":1879,"date":"2021-10-08T04:43:16","date_gmt":"2021-10-08T04:43:16","guid":{"rendered":"http:\/\/sophiaphysics.ie\/?page_id=1879"},"modified":"2021-11-13T09:04:04","modified_gmt":"2021-11-13T09:04:04","slug":"stick-to-the-point","status":"publish","type":"page","link":"https:\/\/sophiaphysics.ie\/index.php\/stick-to-the-point\/","title":{"rendered":"Stick to the Point!"},"content":{"rendered":"\n<p>In this demo experiment from our school workshop series, you will find out about the physics of how plastics or polymers stretch and bend. <\/p>\n\n\n\n<p class=\"has-background has-luminous-vivid-orange-background-color\"><strong>What you need<\/strong><\/p>\n\n\n\n<p>Sharp pencils, zip-lock bag, water, basin or better to do it outside<\/p>\n\n\n\n<p>Watch the video and try this at home!<\/p>\n\n\n\n<p>(Video made by Cillian Fahy)<\/p>\n\n\n\n<figure class=\"wp-block-embed-youtube wp-block-embed is-type-video is-provider-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Ziplock Demo final mp4\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/BDi-1k9XoGI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"has-background has-luminous-vivid-orange-background-color\"><strong>Here&#8217;s the science&#8230;<\/strong><\/p>\n\n\n\n<p>The plastic  in a zip-lock bag is made of polymers which are long chains of molecules. When you poke the sharp pencil into the bag, the polymers move apart but then the flexibility of the polymers push back toward the pencil and form a temporary seal, so the water inside does not pour out when the bag is pierced. When you remove the pencil, you expose the hole in the bag and the water pours out. <\/p>\n\n\n\n<p>Can you think of other times when you have seen how polymers stretch? What other types of stretchy polymers might you use on a daily basis?<\/p>\n\n\n\n<p class=\"has-background has-luminous-vivid-orange-background-color\"><strong>Uses of Stretchy Polymers<\/strong><\/p>\n\n\n\n<p>We&#8217;ve probably all used cling-film at home to wrap up food. Cling-film is also a stretchy polymer which let&#8217;s you stretch it to cover an item well so that no air can get in and preserve it better. <\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>In this demo experiment from our school workshop series, you will find out about the physics of how plastics or polymers stretch and bend. What <a class=\"mh-excerpt-more\" href=\"https:\/\/sophiaphysics.ie\/index.php\/stick-to-the-point\/\" title=\"Stick to the Point!\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"off","_et_pb_old_content":"","footnotes":""},"class_list":["post-1879","page","type-page","status-publish","hentry"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/pages\/1879","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/comments?post=1879"}],"version-history":[{"count":4,"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/pages\/1879\/revisions"}],"predecessor-version":[{"id":2106,"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/pages\/1879\/revisions\/2106"}],"wp:attachment":[{"href":"https:\/\/sophiaphysics.ie\/index.php\/wp-json\/wp\/v2\/media?parent=1879"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}